en_tn/dan/07/10.md

A river of fire flowed out before him

The quick way in which fire came from the presence of God is compared to how water flows in a river. AT: "Fire was rushing out in front of him like a stream" (See: rc://en/ta/man/translate/figs-simile)

before him

The word "him refers to God, the Ancient of Days from Daniel 7:9.

millions

AT: “thousands of thousands” or “great numbers of people”

one hundred million

AT: “tens of thousands times tens of thousands” or “uncountable numbers of people”

The court was in session

This means that God, the judge, was ready to investigate the evidence and make his judgment. AT: "The judge was ready to judge" or "The judge was seated"

the books were opened

These are the books that contain the evidence to be used in court. AT: "the books of evidence were open"